title: An organic D-π-A dye for record efficiency solid-state sensitized heterojunction solar cells.
abstract: The high molar absorption coefficient organic D-π-A dye C220 exhibits more than 6% certified electric power conversion efficiency at AM 1.5G solar irradiation (100 mW cm(-2)) in a solid-state dye-sensitized solar cell using 2,2',7,7'-tetrakis(N,N-dimethoxyphenylamine)-9,9'-spirobifluorene (spiro-MeOTAD) as the organic hole-transporting material. This contributes to a new record (6.08% by NREL) for this type of sensitized heterojunction photovoltaic device. Efficient charge generation is proved by incident photon-to-current conversion efficiency spectra. Transient photovoltage and photocurrent decay measurements showed that the enhanced performance achieved with C220 partially stems from the high charge collection efficiency over a wide potential range.
authors.affiliation: State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China.
authors.forename: Ning
authors.initials: N
authors.lastname: Cai
authors.forename: Soo-Jin
authors.initials: SJ
authors.lastname: Moon
authors.forename: Lê
authors.initials: L
authors.lastname: Cevey-Ha
authors.forename: Thomas
authors.initials: T
authors.lastname: Moehl
authors.forename: Robin
authors.initials: R
authors.lastname: Humphry-Baker
authors.forename: Peng
authors.initials: P
authors.lastname: Wang
authors.forename: Shaik M
authors.initials: SM
authors.lastname: Zakeeruddin
authors.forename: Michael
authors.initials: M
authors.lastname: Grätzel
mesh_terms: D004396:Coloring Agents / Q000737:chemistry*; D011211:Electric Power Supplies; D004867:Equipment Design; D019544:Equipment Failure Analysis; D012666:Semiconductors; D012993:Solar Energy
chemical_list: D004396:Coloring Agents